CLEAR_ENCLOSE_STATUS 2934 regcomp.c            CLEAR_ENCLOSE_STATUS(node, NST_MARK2);
CLEAR_ENCLOSE_STATUS 2986 regcomp.c      	CLEAR_ENCLOSE_STATUS(node, NST_MARK1);
CLEAR_ENCLOSE_STATUS 3044 regcomp.c            CLEAR_ENCLOSE_STATUS(node, NST_MARK2);
CLEAR_ENCLOSE_STATUS 3109 regcomp.c      	  CLEAR_ENCLOSE_STATUS(node, NST_MARK1);